Due to immune‐mediated nature, medicines with immunomodulatory and anti‐inflammatory effects can used to treat many dermatologic diseases. Phosphodiesterase and prostaglandins are involved in many inflammatory pathways that cause cutaneous disorders. Phosphodiesterase inhibitors (PDEIs) and prostaglandin analogues are currently employed to treat several dermatologic disorders. Given the few comprehensive reviews in this context, focusing on the dermatologic applications and efficacy of these medicines appears valuable. The present comprehensive review was, therefore, performed on the applications of PDEIs and prostaglandin analogues in different cutaneous disorders. All the relevant articles were selected to perform this review by searching databases such as Medline, Google Scholar, Scopus, and Web of Science. Oral PDEIs, especially apremilast, is an effective medicine in psoriasis and a number of other cutaneous disorders such as vitiligo. Topical PDEIs, including crisaborole ointment 2%, is a safe and effective treatment in atopic dermatitis. Prostaglandin analogues, especially their topical forms such as latanoprost and bimatoprost, have different applications in cutaneous disorders, including pigmentary disorders, especially vitiligo and hair repigmentation; for instance, bimatoprost is used for eyelash repigmentation. Prostaglandin analogues are also used in alopecia, including androgenetic alopecia and alopecia areata. Oral (apremilast) and topical (crisaborole) PDEIs and topical prostaglandin analogues, including latanoprost and bimatoprost, were found safe and effective in different skin diseases. In terms of efficiency and safety, these medicines compete with other medications of similar use even with higher efficacy and fewer side effects that necessitate further studies.

Allogeneic Hematopoietic Stem Cell Transplantation (allo-HSCT) is the only known curative option for hematologic manifestations of Diamond-Blackfan anemia (DBA) as a rare inherited bone marrow failure syndrome. This treatment may be considered for DBA patients with corticosteroid-resistance, transfusion dependence, and/or progression to severe aplastic anemia or myelodysplastic syndrome (MDS)/ Acute myleloid leukemia (AML). In this prospective study, 10 pediatric DBA patients (age < 15 years) who underwent allo-HSCT from HLA-matched donors using non-TBI myeloablative conditioning regimen (intravenous busulfan and cyclophosphamide ± antithymocyte globulin) during September 2010 to February 2014 are reported. For Graft versus Host Disease (GvHD) prophylaxis cyclosporine A. and a short course of methotrexate were administered. Except one patient who received transplantation from his sibling cord blood, engraftment occurred in all the other patients (9 out of 10) with full donor chimerism (> 95%). The median neutrophil and platelet engraftment times were 11 (range, 10-13) days and 23 (range, 15-50) days, respectively. Acute GvHD developed in 7 patients. After a median follow-up of 53.3 months, 8 patients are still alive, of whom 7 patients are disease-free. The other two patients died due to grade III-IV acute GvHD. Our data suggests that allo-HSCT using busulan-based non-TBI myeloablative conditioning regimen could be a long-term effective treatment for DBA patients. Early transplantation especially before having multiple transfusions leading to iron overload, particularly from an HLAmatched sibling donor would be associated with favorable outcomes.

Alopecia areata (AA), a polygenic and chronic autoimmune disease and there is no definitive cure. We aimed to evaluate latanoprost effects in patients with AA. In this controlled randomized double‐blind clinical trial, we enrolled patients with AA randomly assigned to six groups of 18; Group 1 received latanoprost eye drops; group 2 minoxidil 5% solution; group 3 latanoprost eye drops and minoxidil 5% solution; group 4 betamethasone and minoxidil 5% solution; group 5 betamethasone solution and latanoprost eye drops; group 6 (the control group) betamethasone solution. The alopecia severity in patients before and after treatment was assessed by severity of alopecia tool (SALT). One hundred and eight patients, 50% male (mean age: 32.6 ± 10.4) were studied. The overall SALT score decreased in all. After 2 weeks, patients receiving betamethason‐minoxidil and betamethason‐latanoprost showed more decline in their SALT than other groups. In final, there was statistically significant difference among betamethasone‐latanoprost group with minoxidil, betamethasone‐minoxidil and betamethasone groups. Regrowth was higher in latanoprost and betamethasone‐latanoprost groups than minoxidil. Topical latanoprost added to therapeutic efficacy of topical betamethason and minoxidil in treating patchy AA, suggesting it being beneficial and safe adjuvant therapy and add to efficacy of topical treatments without any adverse effects.

Lichen planoplaris (LPP) is one of the most common causes of inflammatory cicatricial alopecias. There is no definitive cure for the disease and most of the available therapeutic options can potentially lead to serious complications following their use for extended durations. In this study, we aimed to evaluate the efficacy, safety and tolerability of N-acetylcysteine (NAC) and pentoxyfillin (PTX), as adjunctive therapies, in the management of LPP. In a randomized, assessor-and analyst-blinded controlled trial, patients with proven LPP were randomly assigned to three groups of 10. Group I (the control group) received clobetasol 0.05%lotion; Group II, a combination of clobetasol 0.05% lotion and oral PTX; Group III, a combination of clobetasol lotion 0.05% and oral NAC. Lichen planopilaris activity index (LPPAI), the possible side effects, tol-